发明公开
EP2961073A1 COLUMN-TWIST INTERLEAVING FOR LDPC CODES IN COMBINATION WITH 64K QAM
审中-公开
圆柱形交叉切片FKR LDPC KODES IN KOMBINATION MIT 64K QAM
- 专利标题： COLUMN-TWIST INTERLEAVING FOR LDPC CODES IN COMBINATION WITH 64K QAM
- 专利标题（中）： 圆柱形交叉切片FKR LDPC KODES IN KOMBINATION MIT 64K QAM
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申请号： EP15177576.4申请日： 2008-11-26
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公开(公告)号： EP2961073A1公开(公告)日： 2015-12-30
- 发明人: Yokokawa, Takashi , Yamamoto, Makiko , Okada, Satoshi , Sakai, Lui , Ikegaya, Ryoji
- 申请人： Sony Corporation
- 申请人地址： 1-7-1 Konan Minato-ku Tokyo 108-0075 JP
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： 1-7-1 Konan Minato-ku Tokyo 108-0075 JP
- 代理机构： D Young & Co LLP
- 优先权： JP2007304690 20071126; JP2008070467 20080318; JP2008259466 20081006
- 主分类号： H03M13/11
- IPC分类号： H03M13/11 ; H03M13/27 ; H03M13/25 ; H04L1/00
摘要：
The present invention relates to column-twist interleaving (24) for LDPC bit interleaved coded modulation in the DVB framework. More specifically, the present invention is directed to a row-column interleaver comprising mb columns and N/mb rows, in which N LDPC code bits are written column-by-column into the interleaver and read row-by-row from the interleaver. For each column, writing may not start at the top of the column but with an offset. The mb code bits of a row are mapped to b symbols of a 2 m QAM signal constellation. Column offset parameters are provided for LDPC codes of length 64800, b=1,2 and m=16 (i.e. 64 kQAM).
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